please ID this outlet port function (cross double spool)

[/pine]

Attached are a couple of shots of the outlet side of a cross double spool valve.

There is only one port on the outlet side of the valve and I am confused about this...it also says "out" on the same side but it has "BYD" directly on the port casting. I'm looking for any insights you guys have to offer...

I'm hoping this valve does have PB...here are the pics..

 

[/pine]

C'mon...nobody can help me determine if this valve has P BYD or not?

most of the other valves I have seen with pb also have a an out (return) port...can anyone clear this up for me?

thanks...

 

[oldnslo]

from the pictures no I can not. Do you have a model number on the valve bank? Is it for for a closed center or open center system?

Can you tell if the "out" port is also connected "internally ported" to the ends of the spools? I.e. spring chambers. If yes it can NOT be used for power beyond functions unless these covers will withsatnd system pressure.

Roy

 

[J_J]

If it is a PB valve, then it should have 7 ports. One of the out ports should have a T for tank port.

Show pictures of all sides.

 

[/pine]

The only numbers on the valve are 1Z 0202

and 78/109 (which I think are casting #'s ?)


Are there any other ways to identify the valve?

 

[somguyss]

This is a power beyond port for sure, you would need to plumb it that way if you need it!

 

[/pine]

OK I am going to take a wild entirely uneducated guess and assume that this valve is a dedicated Power Beyond valve with no other outlet port?

I was told that the valve came from a working system...I have no idea what kind of system...I am assuming that the valve was used as part of a series and there was no need for a standard valve with PB option...again ?


here is a picture of a standard valve with PB option...note both valves marked have the same port marked "BYD"...this (new) one has that port plugged....note the port marked "out" is not machined on my valve but is on this one...

can anyone confirm that there is such a thing as a dedicated power beyond valve?

 

[kennyd]

I just don't know...This is why I hate used valves. What did you pay for this?

I suspect it is NOT PB capable in it's present form.

OK I am going to take a wild entirely uneducated guess and assume that this valve is a dedicated Power Beyond valve with no other outlet port?

Never heard of such a thing. EVERY other PB capable vavle I have seen/read about has a OUT or T port for the waste fluid from the spools...That is why I suspect this valve is not set up for it. It is probably a universal casting.

 

[AKKAMAAN]

I just don't know...This is why I hate used valves. What did you pay for this?

I suspect it is NOT PB capable in it's present form.

Never heard of such a thing. EVERY other PB capable vavle I have seen/read about has a OUT or T port for the waste fluid from the spools...That is why I suspect this valve is not set up for it. It is probably a universal casting.

I agree 100%!

 

[/pine]

Thanks for the knowledgeable insight...I appreciate you being here...

About the valve...I paid $50 for the valve...one of the deciding factors was it came via free shipping...there was no mention of the valve having power beyond in the listing (the seller may not be the mechanic) so I was not realling expecting it...

If I have learned anything...this valve will have to be the last in a series or by itself in a circuit...is that correct? i.e., plumb the PB port of the preceding valve to the inlet side of this (topic) valve?


question...if there is a PB port on any valve that is not being used...does it just get plugged?

 

[kennyd]

Thanks for the knowledgeable insight...I appreciate you being here...

About the valve...I paid $50 for the valve...one of the deciding factors was it came via free shipping...there was no mention of the valve having power beyond in the listing (the seller may not be the mechanic) so I was not realling expecting it...

If I have learned anything...this valve will have to be the last in a series or by itself in a circuit...is that correct? i.e., plumb the PB port of the preceding valve to the inlet side of this (topic) valve?


question...if there is a PB port on any valve that is not being used...does it just get plugged?

Yes, it should be the last valve or by itself...

When a valve has a PB "option", there is usually a special "sleeve" that goes in the PB or BYD port to redirect the flow toward that port...so the simple answer to your question is Yes-it is plugged.

 

[AKKAMAAN]

Here is a thread from december about power beyond....

 

[/pine]

When a valve has a PB "option", there is usually a special "sleeve" that goes in the PB or BYD port to redirect the flow toward that port...so the simple answer to your question is Yes-it is plugged.

sorry I should have been a little clearer...

The PB "option" valves I have seen...if the option port is to be used to power additional valves you must insert a plug or sleeve and then plumb that port to the next valve...if the port is not going to be used the "insert" is left out and the port is capped...?

Question, can the port be capped with the plug in place? i.e., if the pb port is not being used but the plug or sleeve is inserted can the port still be capped off temporally? ...

 

[kennyd]

sorry I should have been a little clearer...

The PB "option" valves I have seen...if the option port is to be used to power additional valves you must insert a plug or sleeve and then plumb that port to the next valve...if the port is not going to be used the "insert" is left out and the port is capped...?

Question, can the port be capped with the plug in place? i.e., if the pb port is not being used but the plug or sleeve is inserted can the port still be capped off temporally? ...

NO! When the PB plug or sleeve is installed, All the flow from the pump needs to flow out of this port so you absolutely can not cap it at all-it will deadhead the pump. The OUT or T port only carries the waste oil from the work port in a PB valve.

Clear as mud yet?

 

[/pine]

OK so if the PB port is not going to be used the internal insert (plug/sleeve) must be removed in order to cap the port?

the trick is remembering where the little plug is when the pb port is needed...!

 

[AKKAMAAN]

OK so if the PB port is not going to be used the internal insert (plug/sleeve) must be removed in order to cap the port?

the trick is remembering where the little plug is when the pb port is needed...!

knowledge and experience is always "the trick"....

 

[J_J]

/pine

You never did show us the rest of the valve. How many total ports does the valve have?
If that is the only low pressure port/return port, you will have to use it.

 

[/pine]

...You never did show us the rest of the valve. How many total ports does the valve have...

Sorry...there is only one port on either side of the valve (in/out) plus the 4 standard working ports...for a total of 6 ports

I assume the two flat plugs on top of the valve body are either casting plugs or a way to change the valve from open to closed center?

 

[mlauk]

The Cross BA valve has an outlet port location option on the top, end or bottom. Have you looked at the bottom side of the valve housing?

 

[/pine]

The Cross BA valve has an outlet port location option on the top, end or bottom. Have you looked at the bottom side of the valve housing?

there are no other ports on the casting...the only other openings I am not sure about are the two caps on the top of the valve body they are down flat on the face of the body between the working ports...?